Studies have shown that essential oils effectively destroy several fungal, viral and bacterial pathogens, including methicillin-resistant Staphylococcus aureus, Helicobacter pylori and Candida albicans infections. Because antibiotic resistance is becoming such a major threat in modern health care, using these oils as a form of independent or combination therapy can help to fight bacterial infections in a safer and more natural way.  (4, 5)
Because a little bit of oil goes a very long way, a starter set of oils lasts months (if not longer) in our house. It’s a good thing the shelf life of oils is around 1-2 years. One of my favorite sets that includes seven basic oils and seven synergy blends is the “14 Essential Oil Set” from Plant Therapy.  This set contains the majority of oils needed to make most of my homemade products, along with therapeutic synergies (blends of individual oils).
Hey Karen, There’s so much information on essential oils and much of it comes from MLM companies looking to sell lots of oils (much like Avon). These companies work on a commission basis and encourage reps to push information that’s not always safe or studied. I think much of the information on ingesting oils comes from these companies and sellers. I wouldn’t advise ingesting oils unless under the care of a natural doctor that knows what they are doing. One of the best sources for all-things essential oil safety is this independent site run by a certified aromatherapist: http://www.learningabouteos.com/. Plant Therapy also provides great information on their blog. Hope that helps :).
Essential oils have also shown to improve learning, memory and ability to focus. Both stimulating and sedative oils can be useful, as oils like peppermint can improve sustained attention over a longer period of time, while oils like lavender can be useful for people going through tough exercises or situations. Furthermore, they can be useful in relieving agitation in individuals with dementia. This is due to their calming and sedative effects. (10)
Ditch overpowering and harsh chemical-based sprays and keep your home smelling fresh and clean. This blend is made up of six essential oils for the ultimate weapon against odors. Citronella, Lavandin, Lemongrass, Rosemary, Myrtle, and Tea Tree work together to create a refreshing, bright scent that keeps you and your family happy and comfortable. Purification oil kills bad odors from cooking, laundry, pets, or anything else life throws your way. Diffuse it throughout your house or use a more targeted approach so you always feel confident in your home, in the car, or on the go!
While some advocate the ingestion of essential oils for therapeutic purposes, licensed aromatherapy professionals do not recommend self-prescription due to the highly toxic nature of some essential oils. Some very common oils like eucalyptus are extremely toxic when taken internally. Doses as low as 2 mL have been reported to cause clinically significant symptoms and severe poisoning can occur after ingestion of as little as 4 mL.[37] A few reported cases of toxic reactions like liver damage and seizures have occurred after ingestion of sage, hyssop, thuja and cedar oils.[38] Accidental ingestion may happen when oils are not kept out of reach of children. As with any bioactive substance, an essential oil that may be safe for the general public could still pose hazards for pregnant and lactating women.[citation needed]
And a 2014 study involving 82 participants evaluated the effectiveness of aromatherapy for elderly people with chronic pain and symptoms of anxiety and depression. Researchers found that after four weeks of treatment with essential oils, there was a significant reduction in negative emotions, including feelings of anxiety, stress and depression, among the intervention group. (13)
Aromatherapy, today, is described by the Federation of Holistic Therapists as the 'systematic use of plant essential oils for therapeutic purposes.’ Essential oils, that are extracted from aromatic plants,  have properties which can trigger healing effects in the body. As a complementary therapy, aromatherapy is used to help people restore their health and wellbeing, naturally encouraging the body to heal itself. If you visit an aromatherapist the main treatment will usually comprise of a full body massage, using essential oils diluted in a vegetable base oil. There are also various safe and effective self-care techniques that you can use at home. So, how do you get started?
Some essential massage oils may make their way into the placenta, an organ in your uterus that grows along with your baby and helps to nourish it. It’s not clear if this causes any problems, unless you take toxic amounts, but to be safe, it’s best to avoid certain oils if you’re pregnant. Those include wormwood, rue, oak moss, Lavandula stoechas, camphor, parsley seed, sage, and hyssop. Ask your doctor if you’re unsure.

Whilst many people think that the ‘massage’ element is the main event when they go for an Aromatherapy treatment, it is actually more about choosing the best essential oils and allowing them to work their magic. It is the power of the essential oils that is key: the massage therapy simply creates an environment that allows the oils to work at their best, with the help of trained professionals. However, this doesn’t mean that beginners can’t use essential oils at home; you can - the art is just in selecting the most appropriate oils and using them safely to create the desired effects.
Another useful essential oil for digestion is peppermint. Research shows that peppermint oil works to provide rapid relief of IBS symptoms. In a 4-week, randomized, double-blind, placebo-controlled clinical trial, 72 patients with IBS received either peppermint oil or placebo. The peppermint group experienced a 40 percent reduction in total IBS symptoms after 4 weeks, which was superior to the 24 percent decrease of symptoms reported by the patients in the placebo group. After just 24 hours of using peppermint oil, the treatment group experienced a decrease in symptoms of 19.6 percent. (8)

Some essential oils have sedative properties, which can be helpful for people who are having trouble falling asleep or sleeping through the night. Lavender oil, in particular, is known to be an effective sleep aid because of its ability to leave you feeling relaxed and calm. Some other oils that can be used to promote restful sleep include Roman chamomile, ylang ylang, bergamot and vetiver.
Some essential massage oils may make their way into the placenta, an organ in your uterus that grows along with your baby and helps to nourish it. It’s not clear if this causes any problems, unless you take toxic amounts, but to be safe, it’s best to avoid certain oils if you’re pregnant. Those include wormwood, rue, oak moss, Lavandula stoechas, camphor, parsley seed, sage, and hyssop. Ask your doctor if you’re unsure.
The use of essential oils for therapeutic, spiritual, hygienic and ritualistic purposes goes back to ancient civilizations including the Chinese, Indians, Egyptians, Greeks, and Romans who used them in cosmetics, perfumes and drugs.[7] Oils were used for aesthetic pleasure and in the beauty industry. It was a luxury item and a means of payment. It was believed the essential oils increased the shelf life of wine and improved the taste of food.
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